SOURCE:
U.S. Department of Transportation, Research and Innovative Technology
Administration, Bureau of Transportation Statistics, based on data from
various sources.
Oceanborne cargo-United Nations Conference
on Trade and Development, Review of Maritime Transport, various issues,
available at www.unctad.org/rmt as of Oct. 3, 2009.
Air cargo-International
Civil Aviation Organization (ICAO), special tabulations, Sept. 28, 2009.

By weight, air carriers carry less global merchandise trade than ocean vessels. Air carriers
transport high value-per-ton commodities. During the past decade, however, the tonnage of
air cargo transported globally grew at a faster rate than total oceanborne cargo.